a parent spotted the device outside the office at pleasanton elementary school at 1:00 o'clock. classes had been dismissed but police put the school on lock down as precaution on friday police arrested 2 teenagers boys on suspicion of blowing up a mailbox with home made device. the boys had a second bomb in their possession investigators say. >> new at 11:00 san francisco police are on the hunt for the person who shot a man on mission district street. officer reresponsibleed to reports of multiple shots fired near 14th just before 8:00 o'clock tonight no. information on the victim or his condition is available at this moment. members of the ss pd gang task force were on the scene beginning their investigation. >> another fatality on the streets of san francisco this afternoon brings total number of pedestrians deaths to 18. latest accident happened in the city financial district of beall and market where cornell bernard is live for us tonight. >> this intersection very, very busy place during rush hour. the man was crossing beall street right over here when struck and killed. he